I wonder why they didn't just build a multi-use stadium for baseball and NFL football here. The cost of a retractable roof to deal with the heat had to be high for both teams. The Phoenix Cardinals have sold out their newly opened stadium for the whole year, after having the worst attendance for years. They didn't have a home opener for 18 years because of the extreme heat.
Multi-use stadiums suck beans. And roofs are over-rated...cost WAY too much for too little benefit. Unless you live somewhere with lots of rain or extreme climate - it's not worth the headache.
